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author | Tom Stellard <thomas.stellard@amd.com> | 2014-01-23 18:49:33 +0000 |
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committer | Tom Stellard <thomas.stellard@amd.com> | 2014-01-23 18:49:33 +0000 |
commit | 35f321dde5424977c64933393a4cd86a7fcc0306 (patch) | |
tree | 799d2bb16104da753a8e5dc8c50028788cf15540 /lib/Target | |
parent | cbf79028c32a2cac90717ab768e083a13ade4792 (diff) | |
download | llvm-35f321dde5424977c64933393a4cd86a7fcc0306.tar.gz llvm-35f321dde5424977c64933393a4cd86a7fcc0306.tar.bz2 llvm-35f321dde5424977c64933393a4cd86a7fcc0306.tar.xz |
R600: Disable the BFE pattern
This pattern uses an SDNodeXForm, which isn't being emitted for some
reason. I can get it to work by attaching the PatLeaf that has the
XForm to the argument in the output pattern, but this results in an
immediate being used in a register operand, which the backend can't
handle yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199918 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target')
-rw-r--r-- | lib/Target/R600/AMDGPUInstructions.td | 7 | ||||
-rw-r--r-- | lib/Target/R600/R600Instructions.td | 4 |
2 files changed, 10 insertions, 1 deletions
diff --git a/lib/Target/R600/AMDGPUInstructions.td b/lib/Target/R600/AMDGPUInstructions.td index 3c5375d84e..7acd67313e 100644 --- a/lib/Target/R600/AMDGPUInstructions.td +++ b/lib/Target/R600/AMDGPUInstructions.td @@ -388,6 +388,11 @@ class SHA256MaPattern <Instruction BFI_INT, Instruction XOR> : Pat < // Bitfield extract patterns +/* + +XXX: The BFE pattern is not working correctly because the XForm is not being +applied. + def legalshift32 : ImmLeaf <i32, [{return Imm >=0 && Imm < 32;}]>; def bfemask : PatLeaf <(imm), [{return isMask_32(N->getZExtValue());}], SDNodeXForm<imm, [{ return CurDAG->getTargetConstant(CountTrailingOnes_32(N->getZExtValue()), MVT::i32);}]>>; @@ -397,6 +402,8 @@ class BFEPattern <Instruction BFE> : Pat < (BFE $x, $y, $z) >; +*/ + // rotr pattern class ROTRPattern <Instruction BIT_ALIGN> : Pat < (rotr i32:$src0, i32:$src1), diff --git a/lib/Target/R600/R600Instructions.td b/lib/Target/R600/R600Instructions.td index 5e5dae958c..4441fa6495 100644 --- a/lib/Target/R600/R600Instructions.td +++ b/lib/Target/R600/R600Instructions.td @@ -1526,7 +1526,9 @@ let Predicates = [isEGorCayman] in { i32:$src2))], VecALU >; - def : BFEPattern <BFE_UINT_eg>; +// XXX: This pattern is broken, disabling for now. See comment in +// AMDGPUInstructions.td for more info. +// def : BFEPattern <BFE_UINT_eg>; def BFI_INT_eg : R600_3OP <0x06, "BFI_INT", [], VecALU>; defm : BFIPatterns <BFI_INT_eg>; |